Spark Logic

Connect an STM32F103

STM32F103C8T6 LQFP48 · 7 × 7 mm

STM32F103RBT6

LQFP64 · 10 × 10 mm Current model
Open LQFP64 pinout →

Step 1 of 3

Connect every VDD and VSS

Connect every VDD and VSS · STM32F103RBT63.3 VVDD 19,32,48,64VSS 18,31,47,63100 nF × 44.7 µF

Connect all VDD pins to the supply and all VSS pins to ground. This circuit uses 3.3 V. The general digital supply range is 2.0–3.6 V.

Place one 100 nF ceramic capacitor close to each VDD/VSS pair. Connect the 4.7 µF bulk capacitor at VDD_3 #64.

Check the connection
Measure the supply between VDD and VSS before connecting signal sources.

Highlighted pins · LQFP64

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

Pins for this step

SignalPin number
VDD19, 32, 48, 64
VSS18, 31, 47, 63
VDD_364

Reference documents